Filter



W. W. CARRIER FILTER FileFeb. 1o, 1945` Aug. 30, 1949.

Patented Aug. 30,1949

4 FILTER Worthy W. Carrier, Minneapolis, Minn., assignor to Vic Cleaning Machine Co., Minneapolis, Minn., a partnership composed of Charles Victerr-Oscar Victor, Jr., and Worthy W. Carrier Application February 10, 1945, Serial No. 577,311

This invention relates to filters particularly adapted for removing impurities from cleaning fluids used in dry cleaning'clothing and the like.

It is an object of the invention to provide a filter structure wherein the sludge which accumulates on the surfaces of the filtering ele'- ments can be quickly and efficiently removed without injuring the lter cloth and without requiring removal of the ltering elements from the apparatus.

Another object of the invention is to provide filtering apparatus arranged to be oscillated in the filter tank wherein improved means is provided for supporting the ltering elements and moving them as a unit during the sludge removal operationwithout in any way injuring the ltering elements.

Thesevand other objects andadvantages of the invention will more fully appear from the following description made in connection with the accompanying drawings, wherein like reference characters refer to the same parts throughout the views, and, in which:

Figure 1 is a longitudinal vertical sectional view through a filter casing showing the ltering elements in end elevation;

Figure 2 is a longitudinal vertical sectional view through the apparatus looking at right angles to Figure 1;

Figure 3 is a top plan view of the apparatus with the casing cover removed; and

' Figure 4 is an enlarged fragmentary sectional view through one of the filtering elements.

In the drawing there is shown a casing 5 which may be of cylindrical shape. The casing has a removable top 6 and is supported by suitable legs I. A sludge removal pipe 8 which is normally closed by a plate 9 is shown located at the lower portion of the casing 5. A cleaning fluid outlet pipe l is suitably supported across the interior of the casing and has a threaded end I l extending outwardly of the casing to provide a connection to the dry cleaning machine. A cleaning fluid inlet pipe I2 is shown connected to the upper portion of the casing 5 in Figure 1.

The stationary outlet pipe I0 is provided with a nozzle connection I3 which, as shown in Figure 2, has a frusto-conical passageway Ill disposed vertically therethrough. The passageway I4 provides a rotary supporting seat for a flow outlet member I5 of frusto-conical shape, said member I5 being connected to the lower member I6 of a filtering element supporting frame indicated generally at Il. The frame I'I has side s claims. (C1. 21o-182) 2 nected byra removable top member I9 which may conveniently be secured by bolts 29.

yThe frame cross member I6 is provided with a plurality vof flow connections 2| which are oonstructed generally like the now connection I3 on the stationary conduitA I0, each of said connections V2I having a frusta-conical seat to -provide flow communication to the interior of the frame member I6 which is hollow and thence through the flow outlet member I5 to the outlet pipe Ill. In Figure 1 there is shown a plurality of in dividual filtering elements 22 each of which has a frusto-conical outlet member 23 adapted lto be removably supported in its respective frustoconical seat in a iiow connection member 2l on the lower frame Vportion I6.

The specific structure' of the filtering elements is of no particular importance. A typical structure for use in connection with my invention is shown in Figure 4.* It includes a channel shaped frame 24 extending about the edges of a woven wire panel 25 and a fabric cover or bag 26 is adapted to enclose the entire filter element.

The upper frame member I9 is provided on its lower side with a plurality of spaced downwardly projecting elements 21 between which are received the upper ends of the individual lter elements 22, and as shown in Figures 1 and 3,y

said elements 22 are maintained in the frame Il in spaced relation to each other.

The upper side of the frame member I9 is provided with a centrally disposed socket 28 adapted to receive a pivot member 29 extending downwardly from the central part of the casing cover 6, and a compression spring 30 is interposed between the cover 6 and the socket 28 on the upper frame member I9.

Mounted on the side of the casing 5 is a motor 3l connected through transmission gearing 32 to van arm 33 by means of a crank 34. The arm 33 connects with another arm 35 which extends through the side wall of the casing 5 and is adapted to reciprocate relative thereto. The inner end of the arm 35 is pivotally connected at 36 to an end portion of the upper frame member I9 as shown in Figure 3.

From the foregoing description it will be seen that I have provided a filtering unit made up of a plurality of individualltering elements which are supported in the unit in spaced relation to each other and are supported in such a way that they can be oscillated in the casing as a unit, the motion imparted to the filtering elements While in the cleaning liquid being suiicient to members I8 which at their upper ends are con- 55 efficiently remove sludge from the filter cloths or bags 26 whereupon it will drop into the lower portion of the casing 5 below the outlet pipe l0. At infrequent intervals the sludge can be removed through the sludge outlet 8.

My apparatus permits the cleaning of the filtering elements without removing the filtering elements from the casing and it is a relatively simple matter to remove the casing cover 6 and the upper frame member I9 in order to remove one or more ltering elements after long usage in the event a lter bag has become rotted.

Some types of lters of this general class utilize a reversal of ow of the cleaning liquid so Vthat it would come in through' the pipe l0 to the hollow lower frame member,` landthence upwardly into the interiors of the filter bags 26 to wash the sludge from the outer surfaces of the bags. While this reverse ow method can be used it has been found that it is unnecessary with my structure. As a matter of fact, the normal cleaning operation can be continued while the filters are being cleaned of sludge since the motor 3| can be operated'to-oscillate the ltering elements in their unitary frame Il while the cleaning iluid is ilowing in through the inlet pipe I2 and out through the outlet conduit i9. This saves considerabletime'and-expense since it is unnecessary to stop the normal operation of the dry cleaning machine to clean the filter bags.

It will, of course, be understood that various changes may be made inthe form, details, arrangement and proportions of th'evarious parts without departing from the scope of my invention;

What I claim is:

1. In a filter, acasing having a uid inlet and a clean-out opening, a `stationary tubular supporting member mounted'within the casing and extending at least `to the longitudinal axis thereof and having a fluid 'inlet disposed within thel casing and having a fluid outlet 'extending eX- teriorly of said casing, a iiltere'lenclent supporting frame havinga pivot element pivotally` sup-- ported by said tubular supporting member within said casing, said vframe having a part thereof formed to provide a fluid conduit having an inlet' and having an outlet extending through said pivot member and in fluid communication with the inlet of said stationary tubular supporting member, a hollow lter element mounted in said frame in fluid communication with the inlet of the latter, and means for imparting oscillating movement to said frame and thereby the lter element.

2. In a iilter, in accordance with claim 1, wherein the part of the filter element supporting frame which provides a uid conduit is formed with a plurality of spaced inlets, and a plurality of spaced hollow lter elements, one each of which is in iiuid communication with one each of said spaced inlets.

3. In a filter, in accordance with claim 1, wherein the filter element supporting frame is of substantially rectangular form, and said hollow iilter element is likewise of substantially rectangular form and is disposed transversely of said frame.

WORTHY W. CARRIER.

REFERENCES CITED The following references are of record in the ille of this patent:

UNITED STATES PATENTS Number Name Date 544,291 Davidson Aug. 13, 1895 782,950 Dion Feb. 21, 1905 1,670,319 Sweetland MayY 22, 1928 1,812,042 Genter June 30, 1931 2,013,776 Weisman Sept. 10, 1935 2,243,559 Griiith May 27, 1941 2,276,118 Taylor Mar. 10, 1942 2,301,430 Malanowski Nov. 10, 1942 2,346,682 Harris Apr. 18, 1944 2,392,666 Harris Jan. 8, 1946 FOREIGN PATENTS Number Country Date 600,703 Germany July 12, 1934 

